Special Senses

Eyes → Thalamus → ????

Visual Cortex

Ears → Midbrain → Thalamus → ????

Auditory Cortex

Tongue → Midbrain → Thalamus → ???

Gustatory Cortex

Nose → ???

Temporal Lobe

What is caused by an elongated eyeball?

Myopia

Myopia = ???

Nearsightedness

Hyperopia = ???

Farsightedness

What do otolith organs sense?

Gravity

What do semicircular canals sense?

Head rotation

What receptors respond to physical movement (hearing, balance)?

Motoreceptors

What receptors respond to light (vision)?

Photoreceptors

What receptors respond to chemicals (smell, taste)?

Chemoreceptors

Hearing loss defined by a problem transmitting sound (eardrum/ossicles)

Conductive hearing loss

Damage to hair cells or nerves

Sensorineural hearing loss

Age related hearing loss

Presbycusis

When focusing on distant objects, your ciliary muscles make your lens…

relax

When focusing on close objects, your ciliary muscles make your lens…

constrict

What provides a blood supply to the eye?

Choroid

Where are most of your eye’s cones located?

fovea

True or false: You have a blindspot where the optic nerve leaves the cornea (optic disc) - there’s no rods or cones

True

In dim light, only ___ are activated

rods

Which fluid in the eye is more watery?

Aqueous humor

Which fluid in the eye is more viscous?

Vitreous humor

What is caused by a cloudy lens?

Cataracts